Article
Agricultural Engineering
Wenyu Li, Yongzhen Peng, Ruitao Gao, Qiong Zhang, Xiyao Li, Chengkun Kao, Jianwei Li
Summary: This study investigates the impact of low salinity levels on a double-anammox system in treating municipal wastewater, finding that a salinity of 1.0% led to a nitrogen removal efficiency of 81.2%, with a significant contribution of 76.5% from anammox. Low salinity was also found to promote nitritation and denitratation, enhancing the overall nitrogen removal efficiency. The enrichment of specific microbial populations, such as Ca. Brocadia and Nitrosomonas, further supported the effectiveness of the double-anammox process in treating saline wastewater.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Xiaojing Zhang, Denghui Wei, Zhao Chen, Hongli Zhang, Han Zhang, Bingbing Ma, Aihua Gao
Summary: The simultaneous removal of nitrogen and sulfur pollutants is crucial, with low levels of sulfide enhancing total nitrogen removal efficiency while high levels of sulfide significantly decrease efficiency. After acclimatization, the CANON system can resist sulfide shock and achieve good nitrogen removal efficiency under 5 mg L-1 sulfide concentration. Prominent nitrogen removal is achieved through the cooperative contribution of CANON bacteria and denitrifying bacteria in the system.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Jingwei Ma, Weile Yang, Shuizhou Ke, Qiulai He, Quanbao Zhao, Huasheng Yin
Summary: The simultaneous anammox and denitrification (SAD) process was achieved by enriching denitrifying bacteria (DNB) through the addition of sodium acetate to anammox granular sludge. The study investigated the pollutant removal effect and the composition of the main functional microbial community under different organic loads by manipulating the influent C/N ratio. The results showed that the highest total nitrogen removal efficiency of 89.05% was achieved at a C/N ratio of 1, and Candidatus_Brocadia was the dominant genus of AnAOB.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Magdalena Zielinska, Agnieszka Cydzik-Kwiatkowska, Dorota Kulikowska, Katarzyna Bernat, Marcin Zielinski, Irena Wojnowska-Baryla
Summary: Iron incorporation in biomass carriers at different percentages significantly affected the nitrogen removal efficiency and the abundance of Anammox bacteria. The addition of 5% iron carriers resulted in the highest nitrogen removal efficiency (up to 75%) and increased ammonium removal rate. However, the presence of 10% iron carriers inhibited ammonium oxidation rate. The long-term release of ferrous iron from the carrier structure accelerated the treatment of the digester supernatant.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Junxiang Xie, Tianyi An, Adams Mabruk, Yayi Wang, Jianfang Wang, Chongjun Chen, Tian C. Zhang
Summary: Different biochars were added to the reactors, resulting in faster start-up of Anammox and improved structural and functional characteristics of the granular sludge.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Soklida Hong, Mari-K. H. Winkler, Zhiwu Wang, Ramesh Goel
Summary: The study investigated the use of integrated fixed film activated sludge (IFAS) technology for simultaneous removal of nitrogen (N) and phosphorus (P) in municipal wastewater. The technology showed robust performance with high removal efficiencies for both TIN and P. The study also identified the key microbial groups responsible for the removal processes.
Article
Agricultural Engineering
Kai Wan, Ye Yu, Jinggang Hu, Xuemei Liu, Xiangyi Deng, Junxia Yu, Ruan Chi, Chunqiao Xiao
Summary: This study investigated the recovery process of a reactor after being inhibited by a high nitrogen load. The results showed that after 75 days of recovery, the nitrogen removal rate and stoichiometric ratio of the reactor were restored to pre-inhibition levels. The surface structure of the granular sludge changed to a broccoli-like structure, and there was an increase in the Ca and P contents of the granules. Moreover, the abundance of the anammox bacterium Candidatus brocadia also increased, and it showed a positive correlation with specific microbial species.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Genwang Chang, Yu Yang, Yifei Yang, Jinjin Yang, Shaokang Li, Xiaoying Mu, Jingwen Luo, Xiang Li
Summary: Substrate inhibition is a major threat to the stability of anaerobic ammonia oxidation (anammox) reactors. This study focused on the recovery process and microbial community changes in anammox reactors after inhibition. The results showed that reducing the ratio of influent NO2-N to NH4+-N promoted rapid recovery of the anammox system, and biofilms played a crucial role in resisting reactor destabilization.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Youqi Tao, Rui Shi, Linjing Li, Suhui Xia, Jianyong Ning, Wenlai Xu
Summary: This study addressed the issues of sludge floating and uneven mass transfer in up-flow partial denitrification/anammox (PDA) reactors by implementing two strategies: adding biological carriers and applying mechanical stirring. The results showed that both strategies effectively prevented sludge flotation and deterioration of settling performance. Mechanical agitation had a more significant positive impact on PDA performance compared to the addition of biocarriers as it achieved more adequate mass transfer.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Yunzhi Qian, Yan Guo, Junhao Shen, Yu Qin, Yu-You Li
Summary: This study investigated the growth characteristics and treatment performance of biofilms in a single stage partial nitritation/anammox reactor. Biofilm reactivation was achieved through mechanical stirring treatment. The results demonstrate the potential of using mechanical stirring treatment to reactivate biofilms.
Review
Engineering, Environmental
Zhenyu Wang, Zaoli Gu, Yifeng Yang, Ben Dai, Siqing Xia
Summary: This review summarizes the role of biochar in facilitating the anammox process, including shortening start-up time, improving nitrogen removal performance, and alleviating contaminants inhibition. Furthermore, it points out the need for future research on biochar modification and the development of composite carriers.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
C. Polizzi, T. Lotti, A. Ricoveri, R. Campo, C. Vannini, M. Ramazzotti, D. Gabriel, G. Munz
Summary: This study highlights the importance of controlling mineral precipitation on granular sludge systems treating wastewaters prone to inert precipitation to ensure long-term stability. Severe mineral precipitation on the granules' surface can lead to deteriorated reactor performance and biomass activity, with potential mechanisms including substrate diffusion limitation, insufficient mixing, and biofilm erosion. Gravimetric selection proved effective in restoring process performance affected by mineral precipitation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Meina Hu, Xiaojing Liu, Tao Ya, Junyu Liu, Minglu Zhang, Xiaohui Wang
Summary: The effects of different dissolved oxygen (DO) conditions (0.3 and 1.0 mg/L) on microbial interactions in the partial nitrification/anammox (PN/A) process were investigated. High DO concentration (1.0 mg/L) inhibited anammox bacteria activity while enhancing nitrite oxidation bacteria (NOB) activity in the PN/A reactor. The presence of 1.0 mg/L DO promoted the abundance of NOB and some heterotrophic microorganisms, while decreasing the abundance of ammonia oxidizing bacteria and anammox bacteria. The changes in microbial interactions under 1.0 mg/L DO may lead to deterioration in nitrogen removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Yan Feng, Lei Wu, Qiong Zhang, Xiyao Li, Shuying Wang, Yongzhen Peng
Summary: In this study, enhancement of the anammox process and enrichment of anammox bacteria were successfully achieved through the operation of an alternating bioreactor. Furthermore, quantification of the anammox contribution in nitrogen removal provided further insights into the importance of this process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Kiprotich Kosgey, Oluyemi O. Awolusi, Sammy L. Kiambi, Mushal Allam, Arshad Ismail, Faizal Bux, Kartik Chandran, Sheena Kumari
Summary: The study analyzed the impact of mixing conditions on nitrogen removal and community structures in different reactor configurations, showing that mixing conditions influenced process performance and community dynamics in the reactors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yongsen Shi, Manli Liu, Jingyi Li, Yilin Yao, Jingchun Tang, Qigui Niu
Summary: The study found that moderate application of biochar can alleviate the bio-toxicity suppression of oily sludge, improving methane fermentation efficiency and enhancing mesophilic digestion performance through the promotion of interspecies electron transfer among microorganisms.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Green & Sustainable Science & Technology
Ruixin Wu, Yu-You Li, Jianyong Liu
Summary: Due to the lack of biodegradable organic matter in mature landfill leachate, refractory dissolved organic matter has been utilized as a potential carbon source for denitrification. Several methods to improve the biodegradability of this refractory dissolved organic matter have been summarized. Furthermore, a novel integrated anammox-based process has been proposed for mature landfill leachate treatment, which can achieve advanced nitrogen removal in a more economical and environmentally effective way.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Ying Song, Zhen Ma, Yu Qin, Wenzhao Zhao, Wei-Kang Qi, Yu-You Li
Summary: In this study, an autotrophic PN/HAP-A system for achieving carbon neutrality and sustainability in the wastewater treatment industry was proposed. The system was tested using undiluted effluent from an AnMBR digesting municipal organic waste. The results confirmed the high efficiency, stability, and operational simplicity of the system. The study also showed the potential for nitrogen removal and phosphorus recovery from high-strength wastewater using the PN/HAP-A system.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Environmental
Zheng Kong, Haiyuan Ma, Yunqian Song, Xinyue Wang, Liqing Li, Yunsong Yuan, Zhiyu Shao, Hongxiang Chai
Summary: Media amendment significantly enhances the removal of dissolved nutrients in bioretention systems, but it is challenging to maintain both stability and efficiency during long-term operation. Therefore, in practical applications, factors such as catchment characteristics, prioritized pollutants, and meteorological factors should be considered when selecting suitable amended media and design factors to maximize the stability and efficiency of bioretention systems.
Review
Engineering, Environmental
Yi Xue, Haiyuan Ma, Yu -You Li
Summary: This article reviews previous studies on the lifecycle of anaerobic ammonium oxidation (anammox) granular sludge and proposes various sustainable formation mechanisms. The authors summarize the mechanisms of anaerobic, aerobic, and anammox granulation to understand anammox granulation. In the regeneration process, the formation of precursors for re-granulation is explained by the mechanisms of physical crushing, quorum quenching, and dispersion cue sensing. Future research should focus on filamentous bacteria in denitrification-anammox granulation cycle, QS/quorum quenching-based autoinducers, and the development of diversified mechanisms to understand the cycle and the cycle mechanisms of stored granules.
Article
Agricultural Engineering
Ziang He, Yuanyuan Ren, Jianyong Liu, Yu-You Li
Summary: The co-digestion performance of mesophilic hollow fiber anaerobic membrane bioreactor (HF-AnMBR) treating high-solid lipids and food waste was studied for 180 days. The organic loading rate (OLR) was increased from 2.33 to 14.64 g-COD/L/d by increasing the lipids/FW ratio. The HF-AnMBR showed stable performance in terms of COD conversion efficiency, sludge growth rate, and concentrations of COD, proteins, and carbohydrates in permeate.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Min Ye, Qian Li, Yu-You Li
Summary: The study evaluated a high-rate anaerobic membrane bioreactor (AnMBR) for treating dairy processing wastewater (DPW). The AnMBR system exhibited superior performance in terms of methanogenic efficiency and bioenergy recovery, with a high net energy potential of 51.4-53.2 kWh/m3. The application of AnMBR led to a significant reduction of 54.1 kg CO2-eq/m3 compared to the conventional process, making it a promising approach for carbon neutrality and a circular economy.
BIORESOURCE TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Liang Zhang, Zhe Tian, Yunzhi Qian, Fuqiang Chen, Yu -You Li, Xueke Wang, Cuilian Fu, Yongzhi Chi
Summary: The long-term treatment of phosphorus-deficient wastewater using a one-stage partial nitrification-anammox (PNA) process may have negative effects on the growth of functional bacteria. A 650-day experiment was conducted using a lab-scale PNA system to study the impact of long-term phosphorus deficiency on nitrogen removal efficiency and sludge characteristics. It was found that phosphorus deficiency led to a decrease in nitrogen removal efficiency, high sludge volume index, and sludge bulking. The abundance of hzsA in flocs decreased significantly. However, the biofilm showed better resistance to phosphorus deficiency. After the addition of PO43--P, the nitrogen removal rate improved, and sludge bulking disappeared.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Jinghuan Luo, Li Jiang, Yuanyuan Wei, Yanmei Li, Guiyu Yang, Yu-You Li, Jianyong Liu
Summary: Alkaline anaerobic fermentation (AAF) coupled with EDTA addition was used to treat metal and EPSs-rich waste activated sludge (WAS). The addition of EDTA significantly promoted sludge solubilization and SCFAs production by chelating metals and destroying EPSs. This study provides an effective method for recovering carbon source from metal and EPSs-rich WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Jialing Ni, Jiayuan Ji, Yu-You Li, Kengo Kubota
Summary: An anaerobic membrane bioreactor (AnMBR) was used to treat domestic sewage at 15 degrees C under different hydraulic retention time (HRT) conditions (6, 12, 16, and 24 h). The viability of microbial community in anaerobic digestion was assessed using Propidium monoazide (PMA)-PCR, which targeted microorganisms with intact cell membranes. The study found that a 6-hour HRT resulted in poor treatment performance, with low chemical oxygen demand removal efficiency and high mean trans-membrane pressure and flux. PMA-PCR combined with next-generation sequencing provided better identification of microbial changes compared to conventional 16S rRNA gene sequencing.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Chihao Lin, Yanxu Liu, Yu-You Li, Jianyong Liu
Summary: This study proposes high-salinity treatment as a novel strategy for inactivating nitrite-oxidising bacteria (NOB) and achieving stable partial nitritation (PN). The study found that NOB are more sensitive to high salinity than ammonia-oxidising bacteria (AOB), and increasing salinity inhibited nitrification. After high-salinity treatment, nitrite accumulation rate (NAR) was above 33% during nitrification. A novel process for achieving mainstream PN was proposed and evaluated based on the results.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Yunzhi Qian, Shilong He, Fuqiang Chen, Junhao Shen, Yan Guo, Yu Qin, Yu-You Li
Summary: This study evaluated the functional activity and microbial structure of a pre-denitrification and single-stage partial nitritation/anammox process (DB-SNAP) coupled system for effectively treating swine manure digestate (SMD). The results showed that the pre-denitrification reactor increased the nitrogen removal efficiency (NRE) by 5%, resulting in an average NRE of 96%. The DB-SNAP and nitrogen-limited strategy facilitated the rapid adoption of anammox bacteria (AnAOB) in the SMD.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Mengni Tao, Yu Kong, Zhaoqian Jing, Lin Guan, Qiusheng Jia, Yiwei Shen, Meijia Hu, Yu -You Li
Summary: Acorus calamus is recycled as an additional carbon source in microbial fuel cell-constructed wetlands for efficient nitrogen removal of low carbon wastewater. Alkali-pretreatment cleaves the benzene rings in dominant released organics, producing chemical oxygen demand of 164.5 mg per gram of A. calamus. Adding pretreated biomass in the anode of MFC-CW achieves maximum total nitrogen removal of 97.6% and power generation of 12.5 mW/m2.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Jiayuan Deng, Xiangmin Xiao, Yu-You Li, Jianyong Liu
Summary: This study used the innovative low-carbon nitrogen removal process of partial denitrification-anammox (PD-A) to simultaneously treat PPCCW and municipal wastewater pre-treated with 10 mg/L Fe3+. The results showed that the effluent had a total nitrogen concentration lower than 10 mg/L, with a removal efficiency of 79.67 +/- 3.48%. The dominant anammox genus was unclassified_f_Brocadiaceae, indicating the stability of the reactor. Hydrolytic acidifying bacteria SBR1031 and Bacillus increased substantially after feeding with actual wastewater, leading to increased removal efficiencies of organic material and nitrogen, suggesting a synergistic effect with PD-A bacteria. Finally, a novel wastewater treatment process that fully recovers carbon, phosphorus, and water was proposed.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yilin Yao, Yanhao Wei, Jingyi Li, Ruotong Han, Chuanyong Jing, Rutao Liu, Qigui Niu
Summary: Regulating microbial electron flow (MEF) by adding electron acceptor NO3- can promote the biodegradation of organic pollutants such as naphthalene. The study also discovered a strain capable of simultaneous naphthalene biodegradation and denitrification.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
